Every aspect of this song is interesting, which is what progressive music really is. This Tool song stood out to me, just masterfully put together.

we also at least need The Grudge, Third Eye, Aenima, Rosetta Stoned, and maybe even Schism on this list!

Greatest Tool song off of "10, 000 days" in my opinion.It gave me the same feeling as "Lateralus" did when I heard this for the first time. Great rhythm to it, dissonant guitar riffs, great melody and vocals. Although it's not as influential as "Lateralus" it definitely deserves to be because it is just another masterful creation from Tool.